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CybrosA managed agent kernel you host yourself.

Nexus keeps your conversations, drives the agent loop, gates tool calls and delivers tool work to runners on your own machines. rho, the agent that ships with it, is a personal assistant and a coding agent in one.

Choose your starting point ​

You want toStart here
Use the default bundle — Nexus and rho on your own machine or serverInstall the stack, then use rho
Run Cybros for a small team: models, members, upgrades and backupsOperate
Build an agent application with your own prompts, interface or channelBuild your own agent
Add an execution environment — a laptop, a server, a containerRunners
Call models directly through the configured providersDirect model calls
Look up an endpoint, an event type, a status or a limitReference

What Cybros is ​

  • Nexus is the kernel and gateway: one Account with human and agent members, workspaces, conversations, durable runs, model access across providers, tool delivery, approvals, usage accounting and retention.
  • rho is the default agent application: an always-on personal agent and a coding agent, served through a browser page, Telegram, an ACP server for editors and a CLI. It is built only on Nexus's public APIs and is the reference for building your own.
  • Runners and tool providers execute tools. They register with Nexus, announce what they serve and claim work from an inbox over outbound HTTP.

Cybros is built for professional users and small teams who want a managed agent platform without sending their work to a hosted harness. It runs on a laptop, a LAN server or a public host. The source is at jasl/cybros.ai.

Nexus is licensed O’Saasy. The rest of the repository defaults to MIT.